Apparatus for treating and seasoning paper



Feb. 27, 1934. W R, REDD APPARATUS FOR TREATING AND sEAsoNING PAPER Original Filed Dec. 3, 1931 J if www glisse/z gm BY /ca HIS ATTORN EYS Patented Feb. 27, 1934 UNITED STATESi PATENT OFFICE APPARATUS FOR TREATING AND SEASON- ING PAPER William RuSsell Redd,n Western Springs, lill.

2 claims. (c1. ca -1') My invention relates to a certain apparatus for treating and seasoning paper, and has for its principal object the provision of an improved apparatus for bleaching, sterilizing, and deodorizing paper especially'to be converted into articles of manufacture such as paper napkins and towels, the present application being a divisional application of my application for Letters Patent of the United States on a method of treating and seasoning paper led December 3, 1931, and bearing Serial No. 578,771, and n'ow Patent No. 1,850,808, issued March 22, 1932.

In the manufacture of paper, especially with reference to the manufacture of paper from wood pulp or like substance, there results from the pulp mixing operation a slush water which discolors and odorizes the finished paper web, rendering the paper distasteful in color and odor, thereby lessening its value for use in the manufacture of paper napkins and towels, and consequently necessitating expensive operations for thoroughly sterilizing, bleaching, and deodorizing the web before conversion into napkins, towels, or like articles.

There is also present in the paper web manuactured from wood pulp or like substance a* wood-like or rosin-like odor which if not removed is offensive when such paper is converted into and used as paper napkins and towels. It is, therefore, one of the many objects of this invention to provide a simple and inexpensive apparatus for effectively sterilizing, bleaching, and deodorizing the wood pulp and finished paper web in a manner as will permitthe production of vapor having a natural bleach and free from the usual and oiensive odors, especially the odor oi rosin and the usual chemicals used for bleaching purposes.

My invention also has for its object an apparatus for sterilizing, bleaching and deodorizing without the use of the usual chemicals ordinarily used for this purpose, thereby rendering the paper napkins and towels free from bleaching and deodorizing chemicals which might be irritable to the skin.

Other objects will appear hereinafter.

rI'he invention will be best understood by reference to the accompanying drawing showing the preferred application of my invention, and in which:

Fig. 1 is a typical side elevational view of a paper converting machine likewise showing my improved apparatus associated therewith;

Fig. 2 is a fragmentary sectional detail view taken substantially on line 2-2 of Fig. l;

tion.

In Figs. l to 3 inclusive of the drawing l have illustrated my improved apparatus associated with a paper converting machine such as is illustrated in United States Letters Patents Nos.

kchines of any well known design and construc- @b 1,719,833 dated July 9, 1929; 1,613,505 dated Jan- 7@ uary 4, 1927, and 1,548,626 dated August 4, 1925, to which patents reference may be had for a detailed description of the structure and operation of the paper converting machine.

In this connection the paper converting machine illustrated in Figs. l and 2 of the drawing includes a plurality of fold members 23 and receiving troughsl24, the latter of which receive the nished folded article.

The paper fed to these fold members is of a continuous nature and is in roll formation, the rolls being supported in any approved manner, such as, for example, by means of shafts 25 supported by suitable bracket structures 26 provided by the frames 27 of the machine. As the web leaves the rolls indicated at 28, the web is passed between two opposing reector canopies 29, each of which provides a housingK for an ultra-violet lamp 30. The rays from the Vlamp are directed upon the opposite sides of the web as shown.

The paper after passing between the reector canopies is passed through a zone of ozone, which zone in the present instance is conned between the first and second fold members of the machine, indicated respectively at 31 and 32. The ozone is supplied by means of a spray pipe 33 having connection with a supply conduit 34 communicating with a main feed pipe 35 leading to an ozone generator 36 of any approved structure.

The converted paper article, which in the present instance is a napkin, is again subjected t'o an ozonetreatment, and this is accomplished by disposing on opposite sides of the receiving troughs 24 ozone spray pipes 37 which have communication with the main feed pipe 35 by means of branch pipes 38.

By this last application of the ozone tothe nished article, the nished article is given a .final treatment to deodorize any remaining odor of the wood pulp or like substance and to destroy any remaining bacteria.

By the application of ultra-violet rays and ozone to the moving web, the effect of the ultraviolet rays and ozone is uniform throughout the web, the possibility of varying shades being eliminated.

In Fig. 4 I have shown in a general way a paper making machine including a receiving end 10 which receives the wood pulp to be pressed into a paper web by rollers 11 upon the continuous conveyor belt 12 from which the paper is wound in rollform upon a spindle 13. At the receiving end of the paper making machine, in close proximity to the belt 12, I mount in any suitable manner a canopy 14, which canopy 14 has an inner reflector surface and is intended to provide a. housing for an ultra-violet ray lamp 15, the rays from which lamp are directed to the refiector surface of the canopy upon the wood pulp.

At the discharge end of the machine adjacent the paper roll on the spindle 13 I mount, as at 16, in any suitable manner another canopy 17 having an inner reflector surface and likewise designed to provide a housing for an ultra-violet ray lamp 18, the rays of which are reflected down upon the surface of the web of paper prior to the time it is rolled upon the spindle 13.

The rays from both of the ultra-violet lamps mainly function to bleach the paper pulp and finished web removing therefrom the rusty or slush water discoloring which results from the mixing operation of the wood pulp. These rays are also germicidal in character, but as I have found that the rays from an ultra-violet ray lamp do not completely penetrate through the body of the paper Web, I have associated with the machine another means for destroying bacteria and principally for deodoriziing the paper pulp and the paper web formed from such pulp.

In carrying out this object of my invention, I subject the pulp and finished paper web to sprays of ozone which have the effect of deodorizing the wood pulp and the paper web, and as ozone is destructive to bacteria, the ozone in this respect carries forward the function of the rays from the ultra-violet lamps.

,To accomplish this I mount at the receiving end of the machine adjacent the canopy 14 a spray jet 19 which is designed to direct a spray of ozone upon and through the paper web as it leaves the receiving end of the machine. Likewise adjacent the spindle upon which the paper web is rolled I provide a spray jet 20 designed to direct a spray of ozone upon and through the paper web in a direction opposite the direction of the spray of ozone from the jet 19. Both of these spray jets receive the supply of ozone from a supply conduit 20' communicating with an ozone generator 22 of any approved type.

By this arrangement it is manifest that the paper pulp, as well as the paper web, is sterilized, bleached, and deodorized before the paper is wound upon the spindle 13 by a simple and inexpensive method in which none of the usual bleaching or deodorizing chemicals is used.

In the application of my improved apparatus for sterilizing, bleaching, and deodorizing paper pulp or the finished paper web, it is apparent that I do not employ for this purpose chemicals, and

'consequently the finished paper web is free from any injurious chemicals which might otherwise be harmfulto the skin when the paper web is converted into and used as paper napkins and towels. I

- Having thus described my invention, what I claim as new and desire to protect by Letters Patent is: v

1. A paper converting machine through which a. continuous web of paper is adapted to be passed, means for converting the web into individual folded articles, and means for subjecting the paper before conversionto a bleaching, sterilizing, and deodorizing bath.

2. A paper converting machine through which a continuous web of paper is adapted to be passed, means for converting the web into individual folded articles, means for subjecting the paper before conversion to a bleaching, sterilizing and deodorizing bath, and means for subjecting the paper to a bleaching, sterilizing and deodorizing bathafter conversion into said folded articles.

WILLIAM RUSSELL REDD. 

